2FSK调制解调的FPGA设计，基于XINLINX的ISE平台开发，采用VHDL语言设计，有设计文档，欢迎学习借鉴(The FPGA design of 2FSK modulation and demodulation, based on the ISE platform of xinlinx, is designed with VHDL language, with design documents, welcome to learn)